First, adolescent attendance at religious services seems to have become steadily less common over this period.15 Of college freshmen in 1968, barely 8 percent had attended no religious services in the previous year, but by 2009 that entirely unobservant fraction of young people had more than tripled to 25 percent.

As I drove home, my husband drove frantically to the store and cleared off the shelves, purchasing ten more cans of the formula, assumingly from the unobservant Paul, giving us even more funds to save.